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wip on BR + added enc/dec for LWE

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This commit is contained in:
Jean-Philippe Bossuat
2025-06-13 20:45:24 +02:00
parent e8cfb5e2ab
commit 829b8be610
43 changed files with 745 additions and 688 deletions
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22
core/src/glwe/ciphertext.rs
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@@ -1,9 +1,6 @@
use backend::{
Backend, FFT64, Module, VecZnx, VecZnxAlloc, VecZnxBigAlloc, VecZnxBigScratch, VecZnxDftAlloc, VecZnxDftOps, VecZnxToMut,
VecZnxToRef,
};
use backend::{Backend, FFT64, Module, VecZnx, VecZnxAlloc, VecZnxDftOps, VecZnxToMut, VecZnxToRef};
use crate::{FourierGLWECiphertext, GLWEOps, Infos, SetMetaData, div_ceil};
use crate::{FourierGLWECiphertext, GLWEOps, Infos, SetMetaData};
pub struct GLWECiphertext<C> {
pub data: VecZnx<C>,
@@ -14,14 +11,14 @@ pub struct GLWECiphertext<C> {
impl GLWECiphertext<Vec<u8>> {
pub fn alloc<B: Backend>(module: &Module<B>, basek: usize, k: usize, rank: usize) -> Self {
Self {
data: module.new_vec_znx(rank + 1, div_ceil(k, basek)),
data: module.new_vec_znx(rank + 1, k.div_ceil(basek)),
basek,
k,
}
}
pub fn bytes_of(module: &Module<FFT64>, basek: usize, k: usize, rank: usize) -> usize {
module.bytes_of_vec_znx(rank + 1, div_ceil(k, basek))
module.bytes_of_vec_znx(rank + 1, k.div_ceil(basek))
}
}
@@ -62,10 +59,13 @@ impl<C: AsRef<[u8]>> GLWECiphertext<C> {
}
}
impl GLWECiphertext<Vec<u8>> {
pub fn decrypt_scratch_space(module: &Module<FFT64>, basek: usize, k: usize) -> usize {
let size: usize = div_ceil(k, basek);
(module.vec_znx_big_normalize_tmp_bytes() | module.bytes_of_vec_znx_dft(1, size)) + module.bytes_of_vec_znx_big(1, size)
impl<DataSelf: AsRef<[u8]>> GLWECiphertext<DataSelf> {
pub fn clone(&self) -> GLWECiphertext<Vec<u8>> {
GLWECiphertext {
data: self.data.clone(),
basek: self.basek(),
k: self.k(),
}
}
}